Methods for attenuating noise in seismic data

Details Methods for attenuating noise in seismic data Methods for attenuating noise in seismic data

1989-10-24

1991-02-12

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 46, 367 73, 364421, G01V 136, G01V 128

Patent

active

049929950

ABSTRACT:
The present invention relates generally to methods of enhancing seismic data and, more particularly, to methods of attenuating noise in seismic signals. The seismic data are sorted into gathers of seismic signals, and selected coherent events in each gather of seismic signals are aligned. The gathers of seismic signals are then processed so as to transform the balance of the coherent events in each gather of seismic signals into incoherent events. A two-dimensional filter is then applied to the transformed signals to attenuate incoherent events.

REFERENCES:
patent: 4218765 (1980-08-01), Kinkade
patent: 4852068 (1989-07-01), Track
patent: 4907205 (1990-03-01), Yanchak
Wang et al., "Attenuation of Marine Coherent Noise", 59th Annu. Loc. Exp. Geo. Int Mtg., 11/2/89, pp. 1112-1114 abst only provided.
Jones et al., "Signal-to-Noise . . . Transform", Geophys. Pros., vol. 35, #1, pp. 12-32, 1/87, abst. only.
Ryu, J., "Decomposition of Seismic Gathers Into Velocity Components by Space-Time Filter", 50th Annual SEG International Meeting (Nov., 1980).
Gulunay, N., "FXDECON and the Complex Wiener Prediction Filter for Random Noise Reduction on Stacked Data", 56th Annual SEG Meeting, Houston, (1986), pp. 279-281.

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